查询词典 occlusion

The heart of this algorithm is to track at least four fiducial points from frame to frame that construct the affine frame, and thus the occlusion contours between virtual and real objects can be reconstructed and reprojected.

算法的核心是在每一帧图像中追踪至少四个基准点，构成仿射基，进而对虚拟物体与真实物体之间的遮挡轮廓进行重建和重投影。

Ambient occlusion, as other direct lighting techniques is based on a non-local computations.

环境遮挡，作为另一种直接光照技术，它是基于非局部计算的。

Global illumination plays an important role in 3D graphics. Compared with local illumination, global illumination considers not only direct lighting, but also influence from indirect lights and occlusion. Thus, it can simulate more realistic effects, for instance, refraction and reflection of transparent objects, sub-surface scattering of translucent objects and shadow.

三维场景的全局光照计算[76~78]不仅考虑当前着色点的直接入射光照，还涉及环境中其它景物对着色点的间接光照或遮挡的影响，因而可以模拟比局部光照更真实的效果，如透明物体的折射和反射，半透明物体的子表面散射，阴影等。

Premature loss of deciduous tooth or teeth can often destroy the integrity of normal occlusion.

过早失去乳牙或牙齿往往可以摧毁完整的正常咬合。

Other technical considerations include the use of vascular inflow occlusion during cryotherapy.

其他的冷冻治疗中的技术考虑包括脉管流阻塞的使用。

Hard Tissue Cephalometric Measurements, by Burstone Methods, of Teenagers and Adolescents with Normal Occlusion in Jilin Province

目的：建立吉林省正常青少年，儿童X线头影测量Burstone分析法的正常值。方法：选取吉林省松原市7～8岁和14～16岁的儿童，青少年。

Burstone analysis method study on children with beautiful profile normal occlusion

说明：补充资料仅用于学习参考，请勿用于其它任何用途。

Of resorption in vertical and horizontal direction.The purpose of this article is to get the average values and standard deviation of the alveolar ridge heights of the upper and lower central incisors and the first permanent molors in adult with normal occlusion by cep...

测量正常成年人60名的结果提示利用新定的标志和线距对无牙颌原有的上下中切牙和第一磨牙的位置有了确定的方法和数据，进而可测得无牙颌牙槽骨的吸收量，因而扩大了头影测量的临床应用范围。

Objective To investigate whether tyrosine protein kinases Src and Fyn were involved in the phosphorylation of NR2A induced by cerebral ischemia followed by reperfusion. Methods Transient (15 min) brain ischemia was induced by the four-vessel occlusion in Sprague-Dawley rats. The antisense oligodeoxynucleotides of Src and Fyn were used to suppress the expression of Src and Fyn by intracerebroventricular infusion once a day for 3 days before ischemia.

近年来，最受人们关注的缺血性脑损伤机制是兴奋性氨基酸（excitatory amino acid， EAA）的神经毒性作用及神经元内钙超载触发的级联反应［1］，其中NMDA受体的NR2亚基在缺血性脑损伤中起着非常重要的作用，在缺血/再灌注（ischemia/ reperfusion，I/R）过程中其蛋白表达、磷酸化水平均有改变。

Isolated HSE without LIR or ALN was highly indicative of branch occlusion in this study, and of a partial superficial infarct in the middle cerebral artery territory in the previous study.

而之前的文献还曾报道：仅出现半球脑沟消失征而未出现豆状核低信号征及岛带消失征，还可能提示大脑中动脉部分浅表供血区的梗塞。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。